Visit the Castro ValleyHistory section
There are many reasons, but plain
old curiosity is good for a start. Castro Valley History

CV Real Estate

What is MyCastroValley: MyCastroValley.com
is a useful and informative website about Castro Valley, CA, USA. It's a
comprehensive source for information on and regarding the town of Castro Valley.
You can find nearly everything you'd want to know about the town's history,
public resources, clubs, chat groups, local retail/services and calendars
of events.